Symmetrical Triangle
Bilateral IntermediateConverging trendlines of roughly equal slope — both buyers and sellers are becoming more aggressive, creating a tightening range until one side wins.
Quick Summary
- •What it looks like: Two converging trendlines (one descending from above, one ascending from below) meeting at a point, creating a symmetrical triangle or coil shape.
- •What it means: Bulls and bears are in equilibrium, both becoming more aggressive but in opposite directions. The range tightens as neither side gains control — until one does.
- •When it confirms: Price breaks out decisively in either direction (up or down) with strong volume, typically 50-75% through the pattern's duration.
What It Looks Like
Coiling Action
The pattern tightens like a coiled spring as the range narrows. This compression builds energy for an explosive move when one side finally wins.
Breakout Timing
Most reliable breakouts occur between 50-75% through the pattern. Breakouts too early lack confirmation; too late (near apex) lack momentum.
The Story Behind the Pattern
1
Wide Range Begins to Narrow
The stock swings in a wide range as bulls and bears battle for control. Neither side has a clear advantage yet, but the trading range is wide with strong volatility. This is the beginning of the coil.
2
Lower Highs and Higher Lows
Each rally high is lower than the previous one, while each pullback low is higher than before. Both buyers and sellers are becoming more aggressive, meeting closer to the middle each time. The triangle takes shape.
3
Compression Builds to Apex
The range tightens dramatically as price approaches the apex (where the two trendlines would meet). Volatility contracts, volume typically decreases. The market is in a state of indecision — a breakout is imminent.
4
Explosive Breakout Either Direction
One side finally wins. Price breaks out (up or down) with force, often on a volume surge. The compressed volatility releases all at once. The direction depends on which side (buyers or sellers) was quietly accumulating power.
How to Trade Symmetrical Triangle
1
Wait for Directional Breakout
Never anticipate which way it will break. Wait for price to decisively break above resistance or below support. Patience is crucial — premature entries get whipsawed inside the triangle.
2
Don't Anticipate Direction
Symmetrical triangles are truly bilateral — 50/50 odds. Don't try to guess based on prior trend or "feeling." Let the market tell you by breaking out. The breakout direction is often surprising.
3
Target = Widest Point Height
Measure the vertical distance at the widest part of the triangle (left side). Add this distance to the breakout point for upward breakouts, or subtract it for downward breakdowns.
4
Breakout Usually Happens 2/3 Through Pattern
Most breakouts occur 50-75% through the pattern's duration (measuring from base to apex). Too early lacks confirmation, too late (near apex) lacks momentum. The sweet spot is about two-thirds through.
Technical Details
| Pattern Name | Symmetrical Triangle (Coil) |
| Pattern Type | Bilateral (50/50 directional odds) |
| Formation | Converging trendlines of roughly equal slope (lower highs + higher lows) |
| Confirmation | Breakout in either direction with volume surge |
| Price Target | Height at widest point, projected from breakout level |
| Timeframe | Typically 1-3 months, minimum 2-3 weeks |
| Reliability | Moderate-High (65-70%) when volume confirms and breakout timing is right |
| Volume | Decreases during formation (coiling), surges dramatically on breakout |
Remember: The symmetrical triangle is the most neutral pattern — you truly cannot predict which way it will break. False breakouts are common, especially near the apex. Always wait for volume confirmation and a clear break of the trendline before entering. Never try to "front-run" the breakout.
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